Chris Crocker — who became an Internet sensation with his tearful “Leave Britney alone!” defense of Britney Spears on YouTube — spoke out against online bullying at a screening of HBO’s documentary about him, “Me @ the Zoo,” on Wednesday. “Kids go online to get away from bullying in school, and now they’re bullied online,” he said at the film’s debut, part of HBO’s Documentary Films Summer Series. “This film is for the new generation. It’s for kids from small or big towns who are bullied in school and online.” The doc follows Crocker’s life in a Southern town where he had to be home-schooled because of relentless bullying. Also at the event were the film’s co-directors Chris Moukarbel and Valerie Veatch.